KOL and DAVINA should be a SPINOFF + an extra idea
I really would´ve love if the writers made a spinoff where in the first season Kol and Davina work a way to make Kol a witch again (so the aging of the actor wouldn´t be something important to care), and having them with a prospect of "happy" life (remember Kol is still a Mikaelson).
And then some season of supernatural detective life style. Kol creating new magic or Davina... Idk Davina ending like a teacher in Salvatore High.
LIKE... A series of them two alone would´ve been a banger.
Honourable idea: Maybe (only maybe), them having a kid. An older version in the future of this kid appears graduating or something from Supernatural School, and finally becoming a REACHER like hunter, WITH (I just thought of this) OLd JerEMY as a MENTOR....
(Damn, TVDU really had a lot to offer)